Reserve memory for component and platform vectors (#9042)

esphome/components/number/__init__.py

@@ -277,6 +277,7 @@ async def register_number(
     if not CORE.has_id(config[CONF_ID]):
         var = cg.Pvariable(config[CONF_ID], var)
     cg.add(cg.App.register_number(var))
+    CORE.register_platform_component("number", var)
     await setup_number_core_(
         var, config, min_value=min_value, max_value=max_value, step=step
     )